Echoing/hollow voice quality with Meridian car speakers?

I have a 2023 Kia GTL RWD. Love it, but its premium speaker system leaves something to be desired when playing Sirius voicecontent. I'm nowhere near being an audiophile, but I do definitely note that when listening to announcer voices, be it on a music channel or news channel, the voices do have an echoy/hollow sound. This type of voice distortion is not noted when simply listening to regular radio channels (non-SXM radio). I have tried all possible Meridian settings to no avail. Someone on the KIA forum suggested that this is problem with SMX because of limited broadband??? Anyway, what can be causing this distortion? Thanks.